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Wysocki" , Huang Rui CC: , , , , Shuah Khan , , "Nathan Fontenot" , Deepak Sharma , Alex Deucher , Mario Limonciello , Shimmer Huang , "Perry Yuan" , Xiaojian Du , Viresh Kumar , Borislav Petkov , "Oleksandr Natalenko" , Meng Li , Wyes Karny Subject: [PATCH V10 2/7] acpi: cppc: Add get the highest performance cppc control Date: Mon, 30 Oct 2023 14:33:58 +0800 Message-ID: <20231030063403.3502816-3-li.meng@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20231030063403.3502816-1-li.meng@amd.com> References: <20231030063403.3502816-1-li.meng@amd.com> Precedence: bulk X-Mailing-List: linux-acpi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Originating-IP: [10.180.168.240] X-ClientProxiedBy: SATLEXMB03.amd.com (10.181.40.144) To SATLEXMB04.amd.com (10.181.40.145) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CY4PEPF0000EE32:EE_|CH3PR12MB8548:EE_ X-MS-Office365-Filtering-Correlation-Id: 794eddf4-1a9a-40ea-d8b7-08dbd9126217 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:165.204.84.17; CTRY:US; LANG:en; SCL:1; SRV:; IPV:CAL; SFV:NSPM; H:SATLEXMB04.amd.com; PTR:InfoDomainNonexistent; CAT:NONE; SFS:(13230031)(4636009)(346002)(396003)(136003)(376002)(39860400002)(230922051799003)(64100799003)(82310400011)(186009)(1800799009)(451199024)(46966006)(40470700004)(36840700001)(7696005)(966005)(478600001)(16526019)(26005)(1076003)(2616005)(336012)(47076005)(426003)(2906002)(5660300002)(7416002)(54906003)(41300700001)(316002)(110136005)(70206006)(8676002)(8936002)(4326008)(70586007)(6636002)(36860700001)(86362001)(36756003)(356005)(81166007)(82740400003)(40480700001)(40460700003)(15583001)(36900700001); DIR:OUT; SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 30 Oct 2023 06:35:18.0332 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 794eddf4-1a9a-40ea-d8b7-08dbd9126217 X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d; Ip=[165.204.84.17]; Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: CY4PEPF0000EE32.namprd05.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: CH3PR12MB8548 Add support for getting the highest performance to the generic CPPC driver. This enables downstream drivers such as amd-pstate to discover and use these values. Please refer to the ACPI_Spec for details on continuous performance control of CPPC. Tested-by: Oleksandr Natalenko Reviewed-by: Mario Limonciello Reviewed-by: Wyes Karny Acked-by: Huang Rui Signed-off-by: Meng Li Link: https://uefi.org/specs/ACPI/6.5/08_Processor_Configuration_and_Control.html?highlight=cppc#highest-performance --- drivers/acpi/cppc_acpi.c | 13 +++++++++++++ include/acpi/cppc_acpi.h | 5 +++++ 2 files changed, 18 insertions(+) diff --git a/drivers/acpi/cppc_acpi.c b/drivers/acpi/cppc_acpi.c index 7ff269a78c20..ad388a0e8484 100644 --- a/drivers/acpi/cppc_acpi.c +++ b/drivers/acpi/cppc_acpi.c @@ -1154,6 +1154,19 @@ int cppc_get_nominal_perf(int cpunum, u64 *nominal_perf) return cppc_get_perf(cpunum, NOMINAL_PERF, nominal_perf); } +/** + * cppc_get_highest_perf - Get the highest performance register value. + * @cpunum: CPU from which to get highest performance. + * @highest_perf: Return address. + * + * Return: 0 for success, -EIO otherwise. + */ +int cppc_get_highest_perf(int cpunum, u64 *highest_perf) +{ + return cppc_get_perf(cpunum, HIGHEST_PERF, highest_perf); +} +EXPORT_SYMBOL_GPL(cppc_get_highest_perf); + /** * cppc_get_epp_perf - Get the epp register value. * @cpunum: CPU from which to get epp preference value. diff --git a/include/acpi/cppc_acpi.h b/include/acpi/cppc_acpi.h index 6126c977ece0..c0b69ffe7bdb 100644 --- a/include/acpi/cppc_acpi.h +++ b/include/acpi/cppc_acpi.h @@ -139,6 +139,7 @@ struct cppc_cpudata { #ifdef CONFIG_ACPI_CPPC_LIB extern int cppc_get_desired_perf(int cpunum, u64 *desired_perf); extern int cppc_get_nominal_perf(int cpunum, u64 *nominal_perf); +extern int cppc_get_highest_perf(int cpunum, u64 *highest_perf); extern int cppc_get_perf_ctrs(int cpu, struct cppc_perf_fb_ctrs *perf_fb_ctrs); extern int cppc_set_perf(int cpu, struct cppc_perf_ctrls *perf_ctrls); extern int cppc_set_enable(int cpu, bool enable); @@ -165,6 +166,10 @@ static inline int cppc_get_nominal_perf(int cpunum, u64 *nominal_perf) { return -ENOTSUPP; } +static inline int cppc_get_highest_perf(int cpunum, u64 *highest_perf) +{ + return -ENOTSUPP; +} static inline int cppc_get_perf_ctrs(int cpu, struct cppc_perf_fb_ctrs *perf_fb_ctrs) { return -ENOTSUPP;